Signal.



E. E. SALISBURY.

SIGNAL.

` APPLIOATION FILED SEPT. 1, 1910.

1,038,206. Patented Sept. 10, 1912.

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. B. SLISBURY.

t SIGNAL. y K APPLIGATION FILED SET. 1, 1910. 1,038,206, Patented Sept. 10, 1912.

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men that the 'station .desiree to coln -Iminicate with them by telephone. Another' object of the invention is to profor containing the insulated wires.

UNITED STATES PATENT OFFICE.

EDGAR E. SLLISBURY, O2 IILWAUKEE, WISCONSIN, ABSIGNOR T0 SIGNALPHONE ALARM: COKPANY, CORPORATION OF WISCONSIN.

Re., i

tfa'te of' Wlscollsinihave in vted new and Q Improvements in Siggala, efg,wh1ch the* following 'is a vvflescri "gn,- .reference lbeingl had to the-aecompa'n p area part oithis ation. ""`This inventiou'has for it'a" ject to prowide a signal. ywhich will shoirgl signal light and also an alarm, particularlv foi-'notifying policemen oripatml drawings,

vide a combined visible andaudible signal y means which may be operated by a singler electrical circuit, an electric lamp' forming the visible feature of the siguil means being rno'rmallyout of circuit to permit a magnet for producing the audible feature of the signal to receive a full flow of current, and by the movement of arts produced thereb serving to include e lamp in series wit the magnet to reduce the current flow by adding resistance to the circuit.

Another object of the invention is to perfect details of construction of such combined visible and audible means.

With the above and other 'objects in view the invention consists in the signal herein claimed, its parts and combinations of parts and all equivalents.

Referrin to the accompanying drawings 'in which 'lilce characters of "reference indicate the same parts in the-different views: Figure 1 is a central sectional elevation of a signal device constructed in accordance with this invention; Fig. 2 is a bottom view thereof with the main portionof the casing removed; Fig. 3 is a detailed sectional view through the solenoid; and Fig. 4 is a diaam of electrical circuits showing a re* erred method of connecting 'the sign of this invention.

In these drawings, 10 a which is preferably of the type commonly used for railroad semaphore-signal lamps and 11 is a bushin in the hood thereof, threaded to receive t e lower end of a tubular hanger 12 for suspending the signal rrllld hanger 12 also serves as a. means for oonnectlng a bell or gong 13 to the casing, Saidt the signal circuit. "gized for producing the signal by attractgong being referably of such a size and shape lato orm a dome or protective covetuisv "for the entire signal device. Ob-

casvrxng l a solenoid 14 whose core tube 15 projectajdownwardly through the hood and whose up r end preferably also projects "through ai); hood.

The core 16 of the solenoid which is slidable .within the tube 15, has a stem 17 to guide it in its movements by fitting through a ide, opening in the solenoid head 18, an v a ball or hammer 19 on the outer end of the stem is adapted to strike the edge of 13 when the core is moved by the solenoi The stem 17 and its hammer end are preferably of brass so4 as to be unaffected vby the magnetism of the solenoid and a brass tube 20 is threaded on a boss vof the head 18 to surround the hammer 19 and form a protective casing therefor. A coll spring 21 surrounds the stem 17 and forms a cushion to be compressed between goaitioned within the hood of the the core 16 and the head 18 when the core` makes its stroke and thus causes the hammer 19 to rebound from the gong after striking the blow so that it will not interfere with the clear sound of the gong.

At its lower end the core 16 is guided by having a pin 22 slidably fitting in a bore 23 thereof, said pin being mounted on a plug 24 closin the end of the core tube l5. The core 16 a so has a slot 25 near its lower end into which the upper end of a lever 26 projects while passing through a slot 27 in the core tube, said lever being fulcrumed on a lbracket 28 Secured to the solenoid. The movements of the core 16 cause the lever 26 to swing from one position to another by the engagement of the ends of the slot 25 with its upper end. An insulated contact in 29` is carried by the lower end of the ever 26 and in1 the normal position of the parts engages at both ends with a pair of s ring contacts 30 which are mounted on t eterminals 31 and 32 res ctvely of an electric lamp socket 33 which)e oandesoent lamp 34, the effect of the engagement of the contact pin 29 with the spring 30 being to normally brid e across the sig` nal lamp Whenthe solenoid is enering its core to the position shown in Fig. 3, the lever 26 is swung to remove the contact 34 so as to exc ude it from the carries an in.

convenience of making connections this 4inconnection for the lamp and include thelaiiip in the signal circuit.

As the signal is adapted for use in either a direct current circuit or an alternating current curcuit, it may be found desirable to employ a resistance coil which may be easily detached and replaced by another of different resistance in order to suit the articular conditions of the circuit in w ich it is connected and such'resistance coil 35 is shown as mounted on an insulating block 36 alongside of the lamp socket 33 and connected by a bracket 37 to the solenoid. For

sulatin block 36 is provided with a pair of bin ing posts 37 and 38, the latter of which supports the resistance coil 35 and is in electrical connection with one terminal thereof.

The resistance coil 35 and the solenoid 14 and the lamp 34 are connected 'in series as follows One of the terminal wires, 40 connects with the binding post 38 and a wirel41 connects said bindin post 38 with one terminal of the solenoi the other terminal of the solenoid being connected'by wire 42 with the lamp terminal 31. A wire 43 connects the other lamp terminal 32 with the binding post 39, and the resistance coil 35, which has one end in connection with the said binding post 39, has its other end connected to the ot er terminal wire 44.

The signal system may be controlled by a hand switch directly in the electric lighting circuit, but preferably the control of the signals at the central station is made through a relay system, one method of connection being shown in the diagram of Fig. 4. Here the circuit for the signal is established by the closing of a magnetically operated switch 45 connecting the terminal wire 40 with one of the line wires 46 of an electric lighting circuit or the like, the terminal wire 44 being connected with the other of the said line wires 46. The magnet 47 of switch 45 is included in an electric circuit 48 controlled by a key 49 and containing a battery 50 or other source of current supply, said circuit being preferably completed through ground terminals 51 and 52 at the relay switch and at the central sta" tion respectively. The relay switch 45 may control a number of signals like that shown, only one being illustrated in the diagram as sufficient for the purpose.

Inoperation, the patrolman on his beat ma be signaled by the central station, when it is desired to communicate with him, by closing the switch 49 at the central station, thus closing the relay switch 45 and sending the current of the lighting circuit 46 through the signal instrument. At the moment of closing the circuit, the lamp 34 is bri d across by the contact' pin29 so that t solenoid 14 receives the full strength of the current, exce t as it is modified by the resistance 35. e solenoid becomes energized by this stro flow 'of current and'attracts its core 1 causing the hammer 19 to strike the gong 18 with a strong rebounding blow to attract the at' tention of the' atrolman if he is in the vicinity of the signal. The circuit remaining closed, the core of the solenoid remains in its upper position where it holds the lever 26 in its outer position as shown in Fig. 3, thus leaving open the brd connection for the lam and causing ti; current to ow throug the lamp as well as through the' solenoid, cutting down the flow "of current through the solenoid and lighting the lam'lpl to attract the' patrolrnans attention.l e lamp `may thus be kept burning as longfas the switch 49 remains closed, and if repeated sounding of the gong is desired, it is only necessary to repeatedly open and close the switch 49, the gong bein sounded upon the closing of the switch an the light remaining burning -untl the switch is o ened. f

.T e construction of the signal is suclr that the parts are protected from the weather, mainly by being4 inclosed within the casing 1Q, but particularly by being shielded beneath the gong 13 which will serve to shed rain and snow therefrom, and thus prevent interference with the operation of movable arts. f p I desire it to be understood that this invention is not limited to any specific form or arrangement of parts except in so lfar as such limitations are specified in the claims.

What I claim as new and desire to secure by Letters Patent is:

1. A signal, comprising an net, a sounding device operated by net, an electric lamp conn in series with the electromagnet, and switch means operated by the electromagnet and normali bridging across the lamp. v

2, A signal, com rising a solenoid, a com therefor, a ong a apted to be struck by the core when e solenoidl is energized, a suitably connected electric lamp, and switch means operated bythe core andrnormally bridging-across of the electric lamp. i

electromagthe terminals 3. A signal, comprising a-v solenoid, a gravity retracted core t erefor, a gong adapted to be enggied by the core when the solenoid is energi ,a lever operated by the core, an electric lamp connected in series with the solenoid, and contacts connected with the terminals of the lamp adapted to be connected by the lever in the normal position of the core.

4. A signal, comprising a solenoid, a core therefor, a switch operated by the core, an

the mag-y of the solenoid Y electric lamp controlled by the switch, and a gong in position to be struck by the core when the solenoid is energized and constitilting a hood for protecting the parts from the weather.

5. A signal, comprising a lamp casing, a solenoid mounted in the hood thereof in an inclined position, a core tube for the Solenoid, a core operating therein, a hammer carried by the core, a gong mounted on the lamp casing and adapted to be struck by the 6. A signal, comprising a solenoid in. an`

inclined position, a core tube passing therethrough, a core mounted within the tube, a plug fitting in one end of the tube, a guide pin thereon, there being an opening in the lower end of the core to receive the guide pin, a stem on the other end of the core, a solenoid head on the end of the -solenoid having a bearing for the stem, a hammer on the stem, a gong adapted to be struck by the hammer, a lever ivotally mountedv on the solenoid, there being a slot in the core tube through which'the lever passes and an opening in the core into which theend -of the thereof during the movements of the core -for causing the lever to swing, an electric lamp connected in series with the solenoid, spring contacts connected with the terminals of the lamp, and a contact pin carried by the lever adapted to engage the spring contacts for normally bridging across the lamp terminals.

7. A signal, comprising a lamp casing, a solenoid mounted within the hood thereof, a gong secured to the lamp casing and ada ted to be struckl by the core of the solenoi a switch operated by the core of the solenoid, an electric lamp connected in series with the solenoid, contacts on the terminals of the electric lamp adapted to be engaged by the switch, and a removable resistance coil connected in series with the solenoid and mounted Within the lamp casing.

In testimony'whereof, I ali'ix my signature, in presence of two witnesses.

EDGAR E. sALIsBURY.

Witnesses:

R. S. C. CALDWELL, KATHERINE HoL'r. 

